Error while executing the simulation?

clear all

close all

clc

s = -14.5

A = [-3, 5, -7, 0; 0.5, -1.5, 0.5, -7.5; -5, 0, -3, 0; -0.5, -5, 0, -7];

B = [1, 0; 0, -1; -2, 0; 0, 1];

C = [1, 0, 0, 0; 0, -1, 0, 0];

D = [-1, 0; 2, 0];

sys = ss(A,B,C,D);

M = (s*eye(4,4) - A);

P = [ M, -B; C, D]

k = rank(P)

uM = null(P,'r')

I = transpose(uM)

%sys2 = tf( sys );

t = linspace(0, 2.5, 10).';

x_zero = transpose([0,0,0,-0.1333])

u = x_zero.*exp(-14.5*t)

x0= initial(sys,x_zero)

[y,t] = lsim(sys ,u , t)

error that I am receiving:-

Matrix dimensions must agree.

Error in antiresonance_part_two (line 36)

u = x_zero.*-exp(-14.5*t)

Answer 1

[Star Strider]

See my Answer to your duplicate Question how to simulate using lsim command I am receiving error because of variable 't'(time). It took a few minutes to find out what the problem was and then propose a solution.

[Virendra Kowale]

sorry I forgot to remove this question. Thanks a ton. Once again

[Star Strider]

Again, as always, my pleasure!